Help meeee is for tomorrow, plssss!!!
2) For the association of resistors below:
a) The equivalent resistor between A and B.
b) The total electric current that runs through the circuit, knowing that the electrical voltage between terminals A and B is valid 21 V(volts).
c) The value of the electric current passing through the resistor of 1.0 Ohm.
d) The power dissipated through the 8.0 Ohm resistor.

If the roadway is wet and the cars starts to skid, one should slow down by shifting to lower gear. The correct option is B.

A gear is component used to transmit motion. They are used in cars, trucks, machines, bicycles, etc.

For a car to avoid skidding on the wet roads, one must drive the car slowly. This can be done by shifting the gear to the lower one. This will help car to keep balance when brakes are applied on wet roads.

Thus, the correct option is B.

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The final speed of the 15 stationary balls in a game of pool is determined as the ratio of inertia of the cue ball to total mass of the 15 balls.

The  final speed of the 15 balls can be determined by applying the principle of conservation of linear momentum as shown below;

J = ΔP

where;

m1u1 + m0u0 = m1v1 + m0v0

where;

m1u1 - 0 = m1v1 + 15mv0

m1u1  - m1v1 = 15mv0 - 0

recall, m1u1  - m1v1  = ΔP = J

-m = 15m0v0

v0 = -m/15m0

where;

Thus, the final speed of the 15 stationary balls in a game of pool is determined as the ratio of inertia of the cue ball to total mass of the 15 balls.

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Answer:

I believe it is crater.

The total of the liquid in the measuring cylinder given the data from the question is 130 g

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

Mass = Density × Volume

Mass of paraffin = 0.8 × 100

Mass of paraffin = 80 g

Mass = Density × Volume

Mass of water = 1 × 50

Mass of water = 50 g

Mass of mixture = Mass of paraffin +  Mass of water

Mass of mixture = 80 + 50

Mass of mixture = 130 g

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Answer: 20m

Explanation: because half 40 is 20

Answer:

20m

Explanation: because half 40 is 20

In both cases less energy is required

But comparetively Mg require more energy than K

Let's see the electron configuration of Both

K has only one valence electron so very less ionization enthalpy so less energy required

Mg has 2 so more IE hence more energy required

Answer:

F = 246.4 N

Explanation:

First Law: (Law of Inertia)

Second Law:

Third Law: (Action - Reaction)

Weight:

Friction:

Now onto the steps:
----------------------------------

F = mΔV ÷ t

F = 0.093 x 75 ÷ 0.028

F = 246.4 N

Therefore, the average net force acted on the object during this time interval is 246.6 Newtons.

The final displacement of the F-35B Lightning fighter jet is determined as 24,991.2 m.

The displacement of the flight is calculated from triangle method of vector addition as follows;

Angle between the first two sides = 90 - 26⁰  = 64⁰

r² = a² + b² - 2abcosR

r² = 20² + 25000² - (2 x 20 x 25000) x cos(64)

r² = 624,562,028.9

r = 24,991.2 m

Thus, the final displacement of the F-35B Lightning fighter jet is determined as 24,991.2 m.

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"Nina and Ryan each ran at a constant speed for a 100-meter race. Each runner’s distance for the same section of the race is displayed on the left." In the event of things, Ryan had a headstart of 10min. This is further explained below.

Generally, headstart is simply defined as a head start is a benefit received or awarded from the outset.

In conclusion,  "When racing 100 meters, both Nina and Ryan maintained a steady pace. On the left is a chart showing the distance covered by each runner during the same segment of the race." Whatever the case may be, Ryan was given a 10-minute head start.

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Answer: Ryan had a head start of 10 meters.

Explanation: Trust me

Answer:

Resistance at 25 V

Explanation:

(10)

(A)

10

20

100

200

Determining Current in a Parallel Circuit

Observed

Resistor Set

(0)

Total

Resistance

Calculated

Current

(A)

Current

(A)

(10)

20, 20, 20

20, 20, 200

Calculated

Observed:

Calculating Power of Circuit Components

Current through Each Bulb

(A)

Table B

Table C

Table D

Observed Total Current

(A)

Current Experimental

(A)

Observed Current

through Each Resistor

(A)

Power Usage per Bulb

(

From a spring's equilibrium point, a mass is stretched by 4 cm. The restoring force will also double if the displacement doubles. Option B is correct.

The force required to extend or compress a spring by some distance scales linearly with respect to that distance is known as the spring force. Its formula is;

F = kx

The given data in the problem is;

F is the spring force =?

K is the spring constant= 8.5 N/m

x is the length by which spring got stretched = 1.2m

Given condition:

Displacement is doubled(x'=2x)

The spring force is directly propotional to the displacement of the spring;

F ∝ x

F' ∝ x'

If the displacement is doubled, the spring force will also double.

Hence option B is correct.

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Answer: From a spring's equilibrium point, a mass is stretched by 4 cm. The restoring force will also double if the displacement doubles. Option B is correct.

What is spring force?

The force required to extend or compress a spring by some distance scales linearly with respect to that distance is known as the spring force. Its formula is;

F = kx

The given data in the problem is;

F is the spring force =?

K is the spring constant= 8.5 N/m

x is the length by which spring got stretched = 1.2m

Given condition:

Displacement is doubled(x'=2x)

The spring force is directly propotional to the displacement of the spring;

F ∝ x

F' ∝ x'

If the displacement is doubled, the spring force will also double.

Hence option B is correct.

Explanation:

Answer:

The Crusades, the many periods of persecution of Jews, religious conflicts between Catholics and Protestants in sixteenth- and seventeenth-century Europe, the execution of hundreds of Christians in seventeenth-century Japan, the Mormon expulsion from Missouri and Illinois in the 1840s, the Branch Davidian conflagration

The following depict the letters X, Y and Z

Fusion refers to a situation in which two light nuclei come together to form a heavier nucleus. Fission refers to the disintegration of a nucleus by the bombardment of a particle.

The portions that show the letters marked X, Y and Z are;

Missing parts:

Roberto makes a graphic organizer to compare fusion nuclear reactions and fission nuclear reactions. A venn diagram with 2 intersecting circles The circle on the left is labeled fusion. The circle on the right is labeled fission. There is a Z in the fission circle. There is an Y in the intersecting area. There is an X in the fusion circle. Which labels belong in the regions marked X, Y, and Z?

OX: Smaller nuclei form

Y: Thermal energy is produced

Z: A larger nucleus forms

OX: Large amounts of energy are released

Y: One or more neutrons is released

Z: Smaller nuclei form

OX: One or more neutrons is released

Y: A larger nucleus forms

Z: Large amounts of energy are released

OX: A larger nucleus forms

Y: Large amounts of energy are released

Z: Smaller nuclei form

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Answer: D

Explanation: I just took the exam review in edge 2022 and got it right

In scientists view of the universe The creator is replace by: (B). The "Big Bang"

The Big bang is a theory propagated by scientist and astronomers to replace the creator.

The Big Bang is said to be a reason for the universe and all the planets in it. Scientist say the universe started as just a single point with very high temperature and density, and then here comes the big bang.

In conclusion, In scientists view of the universe The creator is replace by: The "Big Bang"

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1 Kilojoule [kJ] = 737.562 149 277 27 Foot pound force [ftlbf]

Answer:

divide by 1000

Explanation:

eg 1kJ is equal to 1000J

According to the information in the fragment, it can be inferred that it is an example of how scientific development has consequences on pre-established theories and new areas are created in science (option C)

A scientific theory is a term to refer to a set of concepts and observations that are proposed as principles to explain a class of phenomena.

According to the above, the discovery of germs and their relationship with human diseases was an event that changed scientific theories about human diseases because it demonstrated a different explanation than what was believed up to that time.

So, the correct answer is option C because this event changed scientific theory and opened new fields for scientific study and research.

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Answer:

Explanation:

According to the information in the fragment, it can be inferred that it is an example of how scientific development has consequences on pre-established theories and new areas are created in science (option C)

What is a scientific theory?

A scientific theory is a term to refer to a set of concepts and observations that are proposed as principles to explain a class of phenomena.

According to the above, the discovery of germs and their relationship with human diseases was an event that changed scientific theories about human diseases because it demonstrated a different explanation than what was believed up to that time.

So, the correct answer is option C because this event changed scientific theory and opened new fields for scientific study and research.

Answer:

1800 j or 1.8 kj

Explanation:

Energy used = power (measured in watts) multiplied by time (measured by seconds)

1 minute is 60 seconds

30 multiplied by 60 is 1800

Answer:

1800 joule

Explanation:

Power (P) = 30W

Time (T) = 1 min =60 sec

P =(W/T)

30 = W / 60

W = 1800 joule

We know that Energy Is equivalent to Work done. So Energy used is 1800 joule.

Hello!

Distance of R/2:

Since a conducting sphere is referenced in this situation, all of its charge will be distributed along its SURFACE. Therefore, there is NO enclosed at a distance of R/2 from the center.

Using Gauss's Law:
[tex]\oint E \cdot dA = E\cdot A = \frac{Q_{encl}}{\epsilon_0}[/tex]

E = Electric field strength (N/C)
A = Area of Gaussian surface (m²)

Q = Enclosed charge (C)
ε₀ = Permittivity of free space C²/Nm²)

If the enclosed charge is 0, then:
[tex]E \cdot A = \frac{0}{\epsilon_0}\\\\\boxed{E = 0 \frac{N}{C}}[/tex]

Distance of '2R':

We can once again use Gauss's Law to solve. This time, however, a surface of radius '2R' encloses ALL of the charge of the sphere.

[tex]E \cdot A = \frac{Q_{encl}}{\epsilon_0}[/tex]

'A' is equivalent to the surface area of a sphere of radius '2R', or:
[tex]A = 4\pi (2R)^2\\\\A = 4\pi (4R^2)\\\\A = 16\pi R^2[/tex]

Substituting this expression back into Gauss's Law:
[tex]E \cdot 16\pi R^2 = \frac{Q}{\epsilon_0}\\\\E = \frac{Q}{16\pi R^2\epsilon_0}[/tex]

To simplify:
[tex]E = \frac{1}{4\pi \epsilon_0 } * \frac{Q}{4R^2}\\[/tex]

OR using k = 1/4πε₀:
[tex]\boxed{E = \frac{kQ}{4R^2}}[/tex]

Answer: A

Explanation:

Answer: 20 minutes

Explanation: omm its 20 minutes

Answer:

it's is because the heavier the object is the more it will be pulled down by gravity n the lighter the object the lesser the gravity will pull it down

Answer:

why is it difficult to move the heavier object than the lighter object on any surface

The angle that the water surface make with the horizontal is 0.527°.

The water vapor moves at speed. Therefore,

v = 2πr/T = (2 × π × 0.120)/7.25

= 0.104m/s

Also, the top layer of water deals a downward force if gravity which will be:

= mv²/r = 0.104/0.12 = 0.0901

There, the angle will be:

= tan(0.0901/9.8)

= 0.527°

In this case, the angle that the water surface make with the horizontal is 0.527°.

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Answer:

3.2 [tex]10^{-2} ohm^{-1} m^{-1}[/tex]

Explanation:

Resistance=5 ohm

Length=4m

Cross sectional area=2.5 x 10

Conductivity = 1/ resistivity

                      =[tex]\frac{length}{resistance x cross sectional area}[/tex]

Conductivity=4 /5 x 2.5 x 10

Conductivity=4/125

Conductivity=3.2x[tex]10^{-2}[/tex][tex]ohm^{-1} m^{-1}[/tex]

The mass media present mental disorders by the daily soap programs and movies.

Mass media is the means of communication that reach large numbers of people in a few seconds through optical fiber transmission cables connection, such as television, newspapers, magazines, and radio.

Studies show that both entertainment and news media provide dramatic and distorted images of mental disorders. It can lead to more dangerous personality to develop in people including fear, rejection, derision and ridicule. The criminal activity has received heavy coverage in the mass media.

Thus, the mass media present mental disorders by the daily soap programs and movies.

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parabolic motion

[tex]\tt t_{max}=\dfrac{2u~sin~\alpha }{g}[/tex]

[tex]\tt h_{max}=\dfrac{u^2sin^2\alpha }{2g}[/tex]

vertically upwards ⇒ α = 90°⇒sin 90° = 1

[tex]\tt 4=\dfrac{2u}{10}\rightarrow u=20~m/s[/tex]

[tex]\tt h_{max}=\dfrac{20^2}{2.10}=\boxed{\bold{20~m}}[/tex]

Answer:

  94 kg

Explanation:

The mass registered by the scale is based on the assumption that the force applied is due entirely to gravity. If the force is greater, then the indicated mass will be greater.

__

As a fraction of the acceleration of gravity, the elevator's acceleration is ...

  (1.2 m/s²)/(9.8 m/s²) ≈ 6/49

The force required to produce a given acceleration is found by the formula ...

  F = ma . . . . . . . force on mass m to produce acceleration 'a'

When the man is stationary on the scale, the upward force it supplies is balanced by the downward force on the man due to gravity. The force and the mass are proportional, and the constant of proportionality (the acceleration due to gravity) is used to calibrate the scale. More force is thus translated to a higher mass reading.

Since the man's net acceleration is upward at the rate of 6/49×g, the total force applied by the scale is (1 +6/49) = 55/49 times as great as when the man is stationary. This greater force gets translated to a greater mass reading.

The force is equivalent to what would be required to support a stationary man with a mass of ...

  (84 kg)(55/49) = 94 2/7 kg

The scale would read about 94 kg during the upward acceleration period.

Explanation:

Because resolution of the light microscope cannot be small than the half of the wavelength of the visible light

(A) It takes about two-thirds as much energy to boil the water as to melt the ice.